新概念英语二册 Lesson72 a car called bluebird 第（2）套PPT课件

1. It was over 300 feet long.
2. The river is 10 meters deep.
The river is 10 meters in depth.
3. The road is 5 meters wide.
The road is 5 meters in width.
Social competition will become more and more fierce.
Have difficulty in doing sth.做某事有困难。
Have trouble in doing sth.做某事有困难。
Eg. 
1. I have difficulty in learning English. 
2. she has difficulty in learning how to swim.